the committee's chair dianne feinstein eventually cleared the room. later, brennan cited the protesters when he address what had he called a misperception about the goal of the drone strikes. let's listen. >> i think there is a misimpression on the part of some american people who believe that we take strikes to punish terrorists for past transgressions. nothing could be further from the truth. we only take such actions as a last resort to save lives when there's no other alternative to taking an action that's going to mitigate that threat. so we need to make sure there is an understanding and the people that were standing up here today, i think they really have a misunderstanding of what we do as a government and the care that we take and the agony that we go through to make sure that we do not have any collateral injuries or deaths. >> robin, when he described this as a last resort to save lives, one reaction i had is among the lives we save when we use drones are those of troops who otherwise would be going into harm's way. >> absolutely. i lived i